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A person has a piece of (mass less) string of length 0.6 m with a ball of mass 0.05 kg at the end of it. The person starts to swing this device in a vertical circle with a center located 2 m above the ground. The tension in the string is kept constant and equal to 10 N. What is the kinetic energy of the ball at the bottom of rotation? What is the kinetic energy of the ball at the top of rotation? What is the dissimilarity in the gravitational potential energy between these two points?
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. How long is he in the air
usha and ritu are two sisters. usha wants to explain some technologies to ritu. initially ritu did not show any
q1. a chair of weight 74.0 n lies atop a horizontal floor the floor is not frictionless. you push on the chair with a
a -10.0 nc point charge and a 20.0 nc point charge are 14.9 cm apart on the x-axis.part a. what is the electric
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
The aluminum bomb has a mass of 0.725 kg and is placed in 2.6kg of water contained in an aluminum calorimeter cup of mass 0.624 kg. The initial temperature of the mixture is 15°C, and its temperature after ignition is 53.5°C.
An observer moving at a speed of 0.860 c relative to a rod (Fig. P26.14) measures its length to be 2.00 m, What is the orientation angle in a reference frame moving with the rod
An object falls a distance h from rest. If it travels 0.5h inthe last 1.00s find the time and the height of its fall
question1a variable reluctance sensor consists of a core a variable air gap and an armature. the core is a steel rod of
A charge of 20 nC is uniformly distributed along a straight rod of length 4.0 m that is bent into a circular arc with a radius of 2.0 m
A car with 60 cm diameter tires is traveling at a constant speed of 100 km/hr. What is the angular velocity of the tires in rad/s
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
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